We just got a MakerBot 3D printer at work and I"ll probably get to play with it at some point.

I know they won't be as nice as the acrylic ones many places make, but they'd certainly be better than the cardboard ones, and it would be cool knowing I "made" them myself.

So has anyone had any luck making them on 3D printers?

I think most folks use laser cutting. Definitely wanna see how 3D printed ones turn out.
Heck, you could probably make some like Litko's 3D tokens. Those are neat, but expensive and probably hard to store.